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← TechnologyWhich outcome occurs when a refrigerant expansion valve fails open in a chiller system?
A)Compressor motor overheating from high pressure
B)Evaporator coil freezing from liquid floodback✓
C)Condenser subcooling due to refrigerant starvation
D)Capacity reduction from reduced discharge temperature
💡 Explanation
When the TXV fails open, excess refrigerant flows causing liquid floodback because the evaporator cannot fully vaporize liquid refrigerant, leading to coil icing and potential compressor damage. Therefore evaporator coil freezing best describes the effect; the alternatives imply opposite or unrelated malfunctions.
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